public void GetChunkSizesForItem_ItemIsDirectory_EmptyList() { var p4 = new NefsHeaderPart4(this.testItems); var sizes = p4.GetChunkSizesForItem(this.dir1); Assert.Empty(sizes); }
public void GetChunkSizesForItem_ItemIsNotCompressed_EmptyList() { var p4 = new NefsHeaderPart4(this.testItems); var sizes = p4.GetChunkSizesForItem(this.file4NotCompressed); Assert.Empty(sizes); }
public void NefsHeaderPart4_MultipleItems_EntriesPopulated() { var p4 = new NefsHeaderPart4(this.testItems); // Dir 1 and file 4 should not have entries. Only compressed files have entries in part 4. Assert.Equal(3, p4.EntriesByIndex.Count); // Total size is (total number of chunks * bytes) Assert.Equal(36U, p4.Size); // File 1 var f1Idx = p4.GetIndexForItem(this.file1); Assert.Equal(1U, p4.EntriesByIndex[f1Idx].ChunkSizes[0]); Assert.Equal(11U, p4.EntriesByIndex[f1Idx].ChunkSizes[1]); Assert.Equal(21U, p4.EntriesByIndex[f1Idx].ChunkSizes[2]); Assert.Equal(3, p4.EntriesByIndex[f1Idx].ChunkSizes.Count); // File 2 var f2Idx = p4.GetIndexForItem(this.file2); Assert.Equal(2U, p4.EntriesByIndex[f2Idx].ChunkSizes[0]); Assert.Equal(22U, p4.EntriesByIndex[f2Idx].ChunkSizes[1]); Assert.Equal(52U, p4.EntriesByIndex[f2Idx].ChunkSizes[2]); Assert.Equal(3, p4.EntriesByIndex[f2Idx].ChunkSizes.Count); // File 3 var f3Idx = p4.GetIndexForItem(this.file3); Assert.Equal(3U, p4.EntriesByIndex[f3Idx].ChunkSizes[0]); Assert.Equal(13U, p4.EntriesByIndex[f3Idx].ChunkSizes[1]); Assert.Equal(23U, p4.EntriesByIndex[f3Idx].ChunkSizes[2]); Assert.Equal(3, p4.EntriesByIndex[f3Idx].ChunkSizes.Count); }
public void NefsHeaderPart1_MultipleItems_EntriesPopulated() { var items = new NefsItemList(@"C:\archive.nefs"); var file1DataSource = new NefsItemListDataSource(items, 123, new NefsItemSize(456, new List <UInt32> { 11, 12, 13 })); var file1 = new NefsItem(new NefsItemId(0), "file1", new NefsItemId(0), NefsItemType.File, file1DataSource, TestHelpers.CreateUnknownData()); items.Add(file1); var file2DataSource = new NefsItemListDataSource(items, 456, new NefsItemSize(789, new List <UInt32> { 14, 15, 16 })); var file2 = new NefsItem(new NefsItemId(1), "file2", new NefsItemId(1), NefsItemType.File, file2DataSource, TestHelpers.CreateUnknownData()); items.Add(file2); var dir1DataSource = new NefsEmptyDataSource(); var dir1 = new NefsItem(new NefsItemId(2), "dir1", new NefsItemId(2), NefsItemType.Directory, dir1DataSource, TestHelpers.CreateUnknownData()); items.Add(dir1); var p4 = new NefsHeaderPart4(items); var p1 = new NefsHeaderPart1(items, p4); Assert.Equal(3, p1.EntriesById.Count); /* * dir1 */ // Offset to data and index to p4 are both 0 since this is a directory Assert.Equal(2, (int)p1.EntriesById[dir1.Id].Id.Value); Assert.Equal(0, (int)p1.EntriesById[dir1.Id].OffsetToData); Assert.Equal(0, (int)p1.EntriesById[dir1.Id].MetadataIndex); Assert.Equal(0, (int)p1.EntriesById[dir1.Id].IndexIntoPart4); /* * file1 */ Assert.Equal(0, (int)p1.EntriesById[file1.Id].Id.Value); Assert.Equal(123, (int)p1.EntriesById[file1.Id].OffsetToData); Assert.Equal(1, (int)p1.EntriesById[file1.Id].MetadataIndex); Assert.Equal(0, (int)p1.EntriesById[file1.Id].IndexIntoPart4); /* * file2 */ Assert.Equal(1, (int)p1.EntriesById[file2.Id].Id.Value); Assert.Equal(456, (int)p1.EntriesById[file2.Id].OffsetToData); Assert.Equal(2, (int)p1.EntriesById[file2.Id].MetadataIndex); // There are 3 chunks for file1, so file2's chunks start right after that (hence p4 // index == 3) Assert.Equal(3, (int)p1.EntriesById[file2.Id].IndexIntoPart4); }
public void NefsHeaderPart1_NoItems_EntriesEmpty() { var items = new NefsItemList(@"C:\archive.nefs"); var p4 = new NefsHeaderPart4(items); var p1 = new NefsHeaderPart1(items, p4); Assert.Empty(p1.EntriesById); }
public void NefsHeaderPart4_NoItems_EntriesEmpty() { var items = new NefsItemList(@"C:\archive.nefs"); var p4 = new NefsHeaderPart4(items); Assert.Empty(p4.EntriesByIndex); Assert.Equal(0U, p4.Size); }
public void GetIndexForItem_ItemIsValue_IndexReturned() { var p4 = new NefsHeaderPart4(this.testItems); Assert.Equal(0U, p4.GetIndexForItem(this.file1)); Assert.Equal(3U, p4.GetIndexForItem(this.file2)); Assert.Equal(6U, p4.GetIndexForItem(this.file3)); }
/// <summary> /// Writes the header part to an output stream. /// </summary> /// <param name="stream">The stream to write to.</param> /// <param name="offset">The absolute offset in the stream to write at.</param> /// <param name="part4">The data to write.</param> /// <param name="p">Progress info.</param> /// <returns>An async task.</returns> internal async Task WriteHeaderPart4Async(Stream stream, UInt64 offset, NefsHeaderPart4 part4, NefsProgress p) { stream.Seek((long)offset, SeekOrigin.Begin); foreach (var entry in part4.Entries) { foreach (var chunkSize in entry.ChunkSizes) { var data = BitConverter.GetBytes(chunkSize); await stream.WriteAsync(data, 0, data.Length, p.CancellationToken); } } }
public async Task WriteHeaderPart4Async_ValidData_Written() { var items = new NefsItemList(@"C:\hi.txt"); var file1 = TestHelpers.CreateItem(0, 0, "file1", 10, 11, new List <UInt32> { 12, 13 }, NefsItemType.File); var file2 = TestHelpers.CreateItem(1, 1, "file2", 20, 21, new List <UInt32> { 22, 23 }, NefsItemType.File); var dir1 = TestHelpers.CreateItem(2, 2, "dir1", 0, 0, new List <UInt32> { 0 }, NefsItemType.Directory); var file3 = TestHelpers.CreateItem(3, 2, "file3", 30, 31, new List <UInt32> { 32, 33 }, NefsItemType.File); items.Add(file1); items.Add(file2); items.Add(dir1); items.Add(file3); var part4 = new NefsHeaderPart4(items); /* * Write */ var writer = this.CreateWriter(); byte[] buffer; var offset = 5; using (var ms = new MemoryStream()) { await writer.WriteHeaderPart4Async(ms, (uint)offset, part4, new NefsProgress()); buffer = ms.ToArray(); } /* * Verify */ Assert.Equal(24 + offset, buffer.Length); Assert.Equal(12, BitConverter.ToInt32(buffer, offset + 0)); Assert.Equal(13, BitConverter.ToInt32(buffer, offset + 4)); Assert.Equal(22, BitConverter.ToInt32(buffer, offset + 8)); Assert.Equal(23, BitConverter.ToInt32(buffer, offset + 12)); Assert.Equal(32, BitConverter.ToInt32(buffer, offset + 16)); Assert.Equal(33, BitConverter.ToInt32(buffer, offset + 20)); }
public void GetChunkSizesForItem_ItemValid_ChunkSizesReturned() { var p4 = new NefsHeaderPart4(this.testItems); var file1Sizes = p4.GetChunkSizesForItem(this.file1); Assert.Equal(3, file1Sizes.Count); Assert.NotSame(this.file1.DataSource.Size.ChunkSizes, file1Sizes); Assert.True(file1Sizes.SequenceEqual(this.file1.DataSource.Size.ChunkSizes)); var file2Sizes = p4.GetChunkSizesForItem(this.file2); Assert.Equal(3, file2Sizes.Count); Assert.NotSame(this.file2.DataSource.Size.ChunkSizes, file2Sizes); Assert.True(file2Sizes.SequenceEqual(this.file2.DataSource.Size.ChunkSizes)); var file3Sizes = p4.GetChunkSizesForItem(this.file3); Assert.Equal(3, file3Sizes.Count); Assert.NotSame(this.file3.DataSource.Size.ChunkSizes, file3Sizes); Assert.True(file3Sizes.SequenceEqual(this.file3.DataSource.Size.ChunkSizes)); }
/// <summary> /// Reads the header from an input stream. /// </summary> /// <param name="originalStream">The stream to read from.</param> /// <param name="offset">The offset to the header from the beginning of the stream.</param> /// <param name="p">Progress info.</param> /// <returns>The loaded header.</returns> internal async Task <NefsHeader> ReadHeaderAsync(Stream originalStream, ulong offset, NefsProgress p) { Stream stream; NefsHeaderIntro intro = null; NefsHeaderIntroToc toc = null; NefsHeaderPart1 part1 = null; NefsHeaderPart2 part2 = null; NefsHeaderPart3 part3 = null; NefsHeaderPart4 part4 = null; NefsHeaderPart5 part5 = null; NefsHeaderPart6 part6 = null; NefsHeaderPart7 part7 = null; NefsHeaderPart8 part8 = null; // Calc weight of each task (8 parts + intro + table of contents) var weight = 1.0f / 10.0f; using (p.BeginTask(weight, "Reading header intro")) { // Decrypt header if needed (intro, stream) = await this.ReadHeaderIntroAsync(originalStream, offset, p); } using (p.BeginTask(weight, "Reading header intro table of contents")) { toc = await this.ReadHeaderIntroTocAsync(stream, NefsHeaderIntroToc.Offset, p); } using (p.BeginTask(weight, "Reading header part 1")) { part1 = await this.ReadHeaderPart1Async(stream, toc.OffsetToPart1, toc.Part1Size, p); } using (p.BeginTask(weight, "Reading header part 2")) { part2 = await this.ReadHeaderPart2Async(stream, toc.OffsetToPart2, toc.Part2Size, p); } using (p.BeginTask(weight, "Reading header part 3")) { part3 = await this.ReadHeaderPart3Async(stream, toc.OffsetToPart3, toc.Part3Size, p); } using (p.BeginTask(weight, "Reading header part 4")) { part4 = await this.ReadHeaderPart4Async(stream, toc.OffsetToPart4, toc.Part4Size, part1, part2, p); } using (p.BeginTask(weight, "Reading header part 5")) { part5 = await this.ReadHeaderPart5Async(stream, toc.OffsetToPart5, toc.Part5Size, p); } using (p.BeginTask(weight, "Reading header part 6")) { if (toc.OffsetToPart6 == 0) { // game.dat files don't have part 6 Log.LogDebug("Archive does not have header part 6."); part6 = new NefsHeaderPart6(new List <NefsHeaderPart6Entry>()); } else { part6 = await this.ReadHeaderPart6Async(stream, toc.OffsetToPart6, toc.Part6Size, part2, p); } } using (p.BeginTask(weight, "Reading header part 7")) { if (toc.OffsetToPart6 == 0) { // game.dat files don't have part 7. Still checking if part 6 offset is 0. For // some reason, the part 7 offset still has a value, but doesn't appear to be a // correct one, so skipping part 7 as well Log.LogDebug("Archive does not have header part 7."); part7 = new NefsHeaderPart7(new List <NefsHeaderPart7Entry>()); } else { part7 = await this.ReadHeaderPart7Async(stream, toc.OffsetToPart7, toc.Part7Size, p); } } using (p.BeginTask(weight, "Reading header part 8")) { var part8Size = intro.HeaderSize - toc.OffsetToPart8; part8 = await this.ReadHeaderPart8Async(stream, toc.OffsetToPart8, part8Size, p); } // Validate header hash if (!this.ValidateHash(stream, offset, intro)) { Log.LogWarning("Header hash does not match expected value."); } // The header stream must be disposed stream.Dispose(); return(new NefsHeader(intro, toc, part1, part2, part3, part4, part5, part6, part7, part8)); }
public void GetIndexForItem_ItemIsUncompressed_NegativeOneReturned() { var p4 = new NefsHeaderPart4(this.testItems); Assert.Equal(0xFFFFFFFFU, p4.GetIndexForItem(this.file4NotCompressed)); }
public void GetIndexForItem_ItemIsDirectory_ZeroReturned() { var p4 = new NefsHeaderPart4(this.testItems); Assert.Equal(0U, p4.GetIndexForItem(this.dir1)); }
public async Task WriteHeaderPart1Async_ValidData_Written() { var items = new NefsItemList(@"C:\hi.txt"); var file1 = TestHelpers.CreateItem(0, 0, "file1", 10, 11, new List <UInt32> { 12, 13 }, NefsItemType.File); var file2 = TestHelpers.CreateItem(1, 1, "file2", 20, 21, new List <UInt32> { 22, 23 }, NefsItemType.File); var dir1 = TestHelpers.CreateItem(2, 2, "dir1", 0, 0, new List <UInt32> { 0 }, NefsItemType.Directory); items.Add(file1); items.Add(file2); items.Add(dir1); var part4 = new NefsHeaderPart4(items); var part1 = new NefsHeaderPart1(items, part4); /* * Write */ var writer = this.CreateWriter(); byte[] buffer; var offset = 5; using (var ms = new MemoryStream()) { await writer.WriteHeaderPart1Async(ms, (uint)offset, part1, new NefsProgress()); buffer = ms.ToArray(); } /* * Verify */ /* * file1 */ // Data offset (8 bytes) Assert.Equal(10, BitConverter.ToInt64(buffer, offset + 0)); // Metadata index Assert.Equal(1, BitConverter.ToInt32(buffer, offset + 8)); // Index to part 4 Assert.Equal(0, BitConverter.ToInt32(buffer, offset + 0x0c)); // Item id Assert.Equal(0, BitConverter.ToInt32(buffer, offset + 0x10)); /* * file2 */ offset += (int)NefsHeaderPart1Entry.Size; // Data offset (8 bytes) Assert.Equal(20, BitConverter.ToInt64(buffer, offset + 0)); // Metadata index Assert.Equal(2, BitConverter.ToInt32(buffer, offset + 8)); // Index to part 4 Assert.Equal(2, BitConverter.ToInt32(buffer, offset + 0x0c)); // Item id Assert.Equal(1, BitConverter.ToInt32(buffer, offset + 0x10)); /* * dir1 */ offset += (int)NefsHeaderPart1Entry.Size; // Data offset (8 bytes) Assert.Equal(0, BitConverter.ToInt64(buffer, offset + 0)); // Metadata index Assert.Equal(0, BitConverter.ToInt32(buffer, offset + 8)); // Index to part 4 Assert.Equal(0, BitConverter.ToInt32(buffer, offset + 0x0c)); // Item id Assert.Equal(2, BitConverter.ToInt32(buffer, offset + 0x10)); }
/// <summary> /// Writes an archive to the specified stream. A new archive obejct is returned that /// contains the updated header and item metadata. /// </summary> /// <param name="stream">The stream to write to.</param> /// <param name="sourceHeader">Donor header information.</param> /// <param name="sourceItems">List of items to write. This list is not modified directly.</param> /// <param name="workDir">Temp working directory path.</param> /// <param name="p">Progress info.</param> /// <returns>A new NefsArchive object containing the updated header and item metadata.</returns> private async Task <NefsArchive> WriteArchiveAsync( Stream stream, NefsHeader sourceHeader, NefsItemList sourceItems, string workDir, NefsProgress p) { // Setup task weights var taskWeightPrepareItems = 0.45f; var taskWeightWriteItems = 0.45f; var taskWeightHeader = 0.1f; // Prepare items for writing NefsItemList items; using (var t = p.BeginTask(taskWeightPrepareItems, "Preparing items")) { items = await this.PrepareItemsAsync(sourceItems, workDir, NefsHeader.ChunkSize, p); } // Determine number of items var numItems = items.Count; // Update header parts 3 and 4 first (need to know their sizes) var p4 = new NefsHeaderPart4(items); var p3 = new NefsHeaderPart3(items); // Compute header size var introSize = NefsHeaderIntro.Size; var tocSize = NefsHeaderIntroToc.Size; var p1Size = numItems * NefsHeaderPart1Entry.Size; var p2Size = numItems * NefsHeaderPart2Entry.Size; var p3Size = p3.Size; var p4Size = p4.Size; var p5Size = NefsHeaderPart5.Size; var p6Size = numItems * NefsHeaderPart6Entry.Size; var p7Size = numItems * NefsHeaderPart7Entry.Size; var p8Size = sourceHeader.Intro.HeaderSize - sourceHeader.TableOfContents.OffsetToPart8; var headerSize = introSize + tocSize + p1Size + p2Size + p3Size + p4Size + p5Size + p6Size + p7Size + p8Size; // Determine first data offset. There are two known offset values. If the header is // large enough, the second (larger) offset is used. var firstDataOffset = NefsHeader.DataOffsetDefault; if (headerSize > firstDataOffset) { firstDataOffset = NefsHeader.DataOffsetLarge; } // Write item data UInt64 archiveSize; using (var t = p.BeginTask(taskWeightWriteItems, "Writing items")) { archiveSize = await this.WriteItemsAsync(stream, items, firstDataOffset, p); } // Update remaining header data var p1 = new NefsHeaderPart1(items, p4); var p2 = new NefsHeaderPart2(items, p3); var p6 = new NefsHeaderPart6(items); var p7 = new NefsHeaderPart7(items); // Compute total archive size var p5 = new NefsHeaderPart5(); p5.Data0x00_ArchiveSize.Value = archiveSize; p5.Data0x08_ArchiveNameStringOffset.Value = p3.OffsetsByFileName[items.DataFileName]; p5.Data0x0C_FirstDataOffset.Value = sourceHeader.Part5.FirstDataOffset; // Update header intro var intro = new NefsHeaderIntro(); intro.Data0x00_MagicNumber.Value = sourceHeader.Intro.MagicNumber; intro.Data0x24_AesKeyHexString.Value = sourceHeader.Intro.AesKeyHexString; intro.Data0x64_HeaderSize.Value = (uint)headerSize; intro.Data0x68_Unknown.Value = sourceHeader.Intro.Unknown0x68; intro.Data0x6c_NumberOfItems.Value = (uint)numItems; intro.Data0x70_UnknownZlib.Value = sourceHeader.Intro.Unknown0x70zlib; intro.Data0x78_Unknown.Value = sourceHeader.Intro.Unknown0x78; var toc = new NefsHeaderIntroToc(); toc.Data0x00_Unknown.Value = sourceHeader.TableOfContents.Unknown0x00; toc.Data0x04_OffsetToPart1.Value = introSize + tocSize; toc.Data0x0c_OffsetToPart2.Value = toc.OffsetToPart1 + (uint)p1Size; toc.Data0x14_OffsetToPart3.Value = toc.OffsetToPart2 + (uint)p2Size; toc.Data0x18_OffsetToPart4.Value = toc.OffsetToPart3 + (uint)p3Size; toc.Data0x1c_OffsetToPart5.Value = toc.OffsetToPart4 + (uint)p4Size; toc.Data0x08_OffsetToPart6.Value = toc.OffsetToPart5 + (uint)p5Size; toc.Data0x10_OffsetToPart7.Value = toc.OffsetToPart6 + (uint)p6Size; toc.Data0x20_OffsetToPart8.Value = toc.OffsetToPart7 + (uint)p7Size; toc.Data0x24_Unknown.Value = sourceHeader.TableOfContents.Unknown0x24; // Part 8 - not writing anything for now var p8 = new NefsHeaderPart8((uint)p8Size); // Create new header object var header = new NefsHeader(intro, toc, p1, p2, p3, p4, p5, p6, p7, p8); // Write the header using (var t = p.BeginTask(taskWeightHeader, "Writing header")) { await this.WriteHeaderAsync(stream, 0, header, p); } // Update hash await this.UpdateHashAsync(stream, 0, header, p); // Create new archive object return(new NefsArchive(header, items)); }